King County Dept. of Natural Resources and Parks, Water and Lands Resources DivisionWellhead Protection Areas "Time of Travel" for Group A Wells - the area where contamination can flow into the well over a ten year travel time.Shapefilehttps://hub.arcgis.com/datasets/dcfb008e1872415480bcafdce51d0942engKing County GIS Open DataPublicWellhead Protection Areas - Ten Year Time of Travel / kcwhpa 10yr area [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)Last modified 2025-04-25